diff --git a/README.md b/README.md
index ca77080..4adbb47 100644
--- a/README.md
+++ b/README.md
@@ -5,34 +5,46 @@ This repository contains the implementation of [GitHub Actions](https://docs.git
 The following three actions are available:
 
 - `setup`: Install Notation
-- `sign`: Sign an OCI artifact with a specified plugin
-- `verify`: Verify a signature
+- `sign`: Sign an OCI artifact with a specified Notation plugin
+- `verify`: Verify a signature with Notation trust store and trust policy
 
 > **Note** The Notary Project documentation is available [here](https://notaryproject.dev/docs/). You can also find the Notary Project [README](https://github.com/notaryproject/.github/blob/main/README.md) to learn about the overall Notary Project.
 
 ## Usage
 
+Signing an image relies on a Notation plugin, such as [AWS Signer plugin for Notation](https://docs.aws.amazon.com/signer/latest/developerguide/Welcome.html), [Azure Key Vault for Notation](https://learn.microsoft.com/en-us/azure/container-registry/container-registry-tutorial-sign-build-push), [HashiCorp Vault plugin](https://github.com/notaryproject/notation-hashicorp-vault/pulls). 
+
+Currently, [Azure Key Vault plugin for Notation](https://github.com/Azure/notation-azure-kv) has been well tested in the Notation Github Actions by the sub-project maintainers. See this [doc](https://github.com/notation-playground/notation-integration-with-ACR-and-AKV/blob/main/sign-action.md) for hands-on steps if you want to use Notation with the AKV plugin. You can submit test cases and examples for other plugins here.
+
 ### Notation Setup
+
 ```yaml
 - name: setup Notation CLI
-  uses: notaryproject/notation-action/setup@main
+  uses: notaryproject/notation-action/setup@v1
   with:
     version: <version_of_official_Notation_CLI_release>
     url: <url_of_customized_Notation_CLI>
     checksum: <SHA256_of_the_customized_Notation_CLI>
 ```
-For example,
+
+<details>
+
+<summary>See an example (Click here).</summary>
+
 ```yaml
 - name: setup Notation CLI
-  uses: notaryproject/notation-action/setup@main
+  uses: notaryproject/notation-action/setup@v1
   with:
     version: "1.0.0"
 ```
 
+</details>
+
 ### Notation Sign
+
 ```yaml
 - name: sign releasd artifact with signing plugin
-  uses: notaryproject/notation-action/sign@main
+  uses: notaryproject/notation-action/sign@v1
   with:
     plugin_name: <notation_signing_plugin_name>
     plugin_url: <plugin_download_url>
@@ -43,14 +55,18 @@ For example,
     plugin_config: <list_of_plugin_defined_configs>
     allow_referrers_api: <boolean_flag_for_referrers_api>
 ```
-For example,
+
+<details>
+
+<summary>See an example (Click here).</summary>
+
 ```yaml
 - name: sign releasd artifact with notation-azure-kv plugin
-  uses: notaryproject/notation-action/sign@main
+  uses: notaryproject/notation-action/sign@v1
   with:
     plugin_name: azure-kv
-    plugin_url: https://github.com/Azure/notation-azure-kv/releases/download/v1.0.0/notation-azure-kv_1.0.0_linux_amd64.tar.gz
-    plugin_checksum: 82d4fee34dfe5e9303e4340d8d7f651da0a89fa8ae03195558f83bb6fa8dd263
+    plugin_url: https://github.com/Azure/notation-azure-kv/releases/download/v1.0.1/notation-azure-kv_1.0.1_linux_amd64.tar.gz
+    plugin_checksum: f8a75d9234db90069d9eb5660e5374820edf36d710bd063f4ef81e7063d3810b
     key_id: https://testnotationakv.vault.azure.net/keys/notationLeafCert/c585b8ad8fc542b28e41e555d9b3a1fd
     target_artifact_reference: myRegistry.azurecr.io/myRepo@sha256:aaabbb
     signature_format: cose
@@ -58,17 +74,19 @@ For example,
       ca_certs=.github/cert-bundle/cert-bundle.crt
       self_signed=false
 ```
-Example of using the [Referrers API](https://github.com/opencontainers/distribution-spec/blob/v1.1.0-rc.3/spec.md#listing-referrers),
+
+Example of using the [Referrers API](https://github.com/opencontainers/distribution-spec/blob/v1.1.0-rc.3/spec.md#listing-referrers) in signing:
+
 ```yaml
 - name: sign releasd artifact with notation-azure-kv plugin
-  uses: notaryproject/notation-action/sign@main
+  uses: notaryproject/notation-action/sign@v1
   env:
-    NOTATION_EXPERIMENTAL: 1  # this is requried by Notation to use Referrers API
+    NOTATION_EXPERIMENTAL: 1  # this is required by Notation to use Referrers API
   with:
     allow_referrers_api: 'true'
     plugin_name: azure-kv
-    plugin_url: https://github.com/Azure/notation-azure-kv/releases/download/v1.0.0/notation-azure-kv_1.0.0_linux_amd64.tar.gz
-    plugin_checksum: 82d4fee34dfe5e9303e4340d8d7f651da0a89fa8ae03195558f83bb6fa8dd263
+    plugin_url: https://github.com/Azure/notation-azure-kv/releases/download/v1.0.1/notation-azure-kv_1.0.1_linux_amd64.tar.gz
+    plugin_checksum: f8a75d9234db90069d9eb5660e5374820edf36d710bd063f4ef81e7063d3810b
     key_id: https://testnotationakv.vault.azure.net/keys/notationLeafCert/c585b8ad8fc542b28e41e555d9b3a1fd
     target_artifact_reference: myRegistry.azurecr.io/myRepo@sha256:aaabbb
     signature_format: cose
@@ -77,28 +95,37 @@ Example of using the [Referrers API](https://github.com/opencontainers/distribut
       self_signed=false
 ```
 
+</details>
+
 ### Notation Verify
+
 ```yaml
 - name: verify released artifact
-  uses: notaryproject/notation-action/verify@main
+  uses: notaryproject/notation-action/verify@v1
   with:
     target_artifact_reference: <target_artifact_reference_in_remote_registry>
     trust_policy: <file_path_to_user_defined_trustpolicy.json>
     trust_store: <dir_to_user_trust_store>
     allow_referrers_api: <boolean_flag_for_referrers_api>
 ```
-For example,
+
+<details>
+
+<summary>See an example (Click here).</summary>
+
 ```yaml
 - name: verify released artifact
-  uses: notaryproject/notation-action/verify@main
+  uses: notaryproject/notation-action/verify@v1
   with:
     target_artifact_reference: myRegistry.azurecr.io/myRepo@sha256:aaabbb
     trust_policy: .github/trustpolicy/trustpolicy.json
     trust_store: .github/truststore
 ```
-`.github/trustpolicy/trustpolicy.json` MUST follow the Notation [trust policy specs](https://github.com/notaryproject/specifications/blob/v1.0.0-rc.2/specs/trust-store-trust-policy.md#trust-policy).
 
-`.github/truststore` MUST follow the Notation [trust store specs](https://github.com/notaryproject/specifications/blob/v1.0.0-rc.2/specs/trust-store-trust-policy.md#trust-store). For example,
+> [!NOTE]
+> - `.github/trustpolicy/trustpolicy.json` MUST follow the Notation [trust policy specs](https://github.com/notaryproject/specifications/blob/v1.0.0/specs/trust-store-trust-policy.md#trust-policy).
+> - `.github/truststore` MUST follow the Notation [trust store specs](https://github.com/notaryproject/specifications/blob/v1.0.0/specs/trust-store-trust-policy.md#trust-store). See an example of trust store below.
+ 
 ```
 .github/truststore
 └── x509
@@ -111,15 +138,33 @@ For example,
             ├── <my_certificate3>
             └── <my_certificate4>
 ```
-Example of using the [Referrers API](https://github.com/opencontainers/distribution-spec/blob/v1.1.0-rc.3/spec.md#listing-referrers),
+
+Example of using the [Referrers API](https://github.com/opencontainers/distribution-spec/blob/v1.1.0-rc.3/spec.md#listing-referrers) in verification:
+
 ```yaml
 - name: verify released artifact
-  uses: notaryproject/notation-action/verify@main
+  uses: notaryproject/notation-action/verify@v1
   env:
-    NOTATION_EXPERIMENTAL: 1  # this is requried by Notation to use Referrers API
+    NOTATION_EXPERIMENTAL: 1  # this is required by Notation to use Referrers API
   with:
     allow_referrers_api: 'true'
     target_artifact_reference: myRegistry.azurecr.io/myRepo@sha256:aaabbb
     trust_policy: .github/trustpolicy/trustpolicy.json
     trust_store: .github/truststore
-```
\ No newline at end of file
+```
+
+</details>
+
+## Authentication
+
+To sign and verify an image stored in the private registry with Notation GitHub Actions, you need to authenticate with the registry and KMS (Key Management Service). See the following authentication options for references. 
+
+### Registry authentication
+
+- Use [Docker login GitHub Action](https://github.com/marketplace/actions/docker-login).
+- Use vendor-based login GitHub Action, such as [Amazon ECR "Login" Action for GitHub Actions](https://github.com/marketplace/actions/amazon-ecr-login-action-for-github-actions), [GitHub Action for Azure Login](https://github.com/marketplace/actions/azure-login) or [Azure Container Registry Login GitHub Actions](https://github.com/marketplace/actions/azure-container-registry-login).
+
+### KMS authentication
+
+If your signing key and certificate are stored in a KMS, make sure to authenticate with the KMS before signing the image in your GitHub Actions workflow.
+